Drill-press.



No. 709568. Pafented Sept. 23,1902.

A. VLK.

DRILL PRESS.

(Application filed Apr. 2, 1902.) (No Model.) 4 Sheet's8heet l,

% QM 2y v rm: bums mmzns co. PNDYO-LITNQ, WAsHINGTONENQ Patented Sept.23, I902.

A, VLK'.

DRILL PRESS.

(Application filed Apr. 2, 1902.)

4 Sheets-Sheet 2;

(No Model.)

m: NORBIS PETERS co. PnoTaumo" msmncrow.

No. 709,568. Patented" Sept. 23, 1902.

A. VLK. v DRILL PRESS.

(Application filed. Apr. 2, 1902.)

(N0 Moder.)

{Sheets-Sheet a,

m: nonhrs PcrzRs do. PHoTquTmfwnwmumu. o. c

A VLK n'mu. PRESS. (Application filed Apr. 2, 1902.)

4 Sheets- 8mm 4.

(No Model.)

UNITED STATES ATENT OFFICE.

ADOLPH VLK, OF CHICAGO, ILLINOIS.

DRILL-PRESS.

' SPECIFICATION forming part of Letters Patent No. 709,568, datedSeptember 23, 1902.

Application filed April 2. 1902. Serial No. 101,0 l'7. (No model.)

To all? whom, it 772.00g concern.-

Be it known that I, ADOLPH VLK, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inDrill-Presses, of

.which the following is a specification.

The main object of my invention is to provide an improved form ofdrillpress wherein two sets of independent drilling mechanism aremounted uponthe same axis and adapted to operate independently of eachother upon the same bed plate, to provide improved means for readilychanging each of said mechanisms, so as to operate at a plurality ofdifferent speeds, and to provideimproved means for changing theelevation of said drilling mechanisms above said bed-plate. I accomplishthese objects by the device shown in the accompanying drawings, in whichFigure 1 is a front elevation of a drill-press constructed according tomy invention. Fig. 2 is a rear elevation of one of the arms of same,together with its adjacent mechanism. Fig. 3 is a top plan of themechanism shown in Fig. 2, partly broken away. Fig. 4 is an endelevation of the mechanism shown in Fig. 2. Fig. 5 is a plan of a gear,showing means for temporarily securing same to its shaft. Fig. 6 is asection along the line 6 6 of Fig. 5. Fig. 7 is a plan of thelocking-pin shown in connection with the gear in Fig. 5, together withthe tool for inserting and removing same.

Fig. 8 is an end elevation of the locking-pin shown in Fig. 7. Fig. 9 isa plan of one of the clamps which are used for connecting the arms withtheir lifting mechanism. Figs. 10 and 11 are elevations of the same.Fig. 12 is a section on the line 12" 12 of Fig. 1. Fig. 13

is a longitudinal section of the bevel-gear and coacting clutch whichcontrol the operation of the drilling mechanism of one of the arms.

The construction shown consists of a bedplate 1, provided withclamping-slots 2, as is usual in devices of this class, and havingrigidly secured thereto a vertical cylindrical post 4. The post 4 isaccurately turned and has fitted thereon a pair of crane-arms 5. Thesearms are each provided with a hub 7, which encircles the post tand issplit and provided with clamps whereby the hub 7 may be caused to gripthe post 4 and secure the arm against movement. A collar 9, fitting thepost 4-,is located below each of the cranearms and provided with a clamp10, similar to the clamps 8, whereby said collar may be secured to thepost 4. and secure the cranearm nst movement longitudinally of the post4, when the clamps 8 are released to permit free angular movement ofsaid arm about said post. One face of each crane-arm is provided withhorizontal guides 11, upon which is mounted a cross-head 12, whichcarries a system of drilling mechanism. Mounted within the cross-head12, so as to be revoluble and vertically slidable therein, is adrill-shaft 13, which is fitted with feeding mechanism 14, such as iscommon in devices of this class. Also journaled in the cross-head 12 inparallel relation to the drillshaft 13 is a second shaft 15, whichconnects, by means of the bevel-gears 16 and 17, with the horizontalshaft 18, which is journaled 011 the rear side of the crane-arm 5. Theshaft 13 connects, by means of a feather 19, to the gears 20, of whichfour are shown, varying in size. Also mounted on the shaft 13 is a cone21, which connects, by means of the belt 22, with the cone 23, whichdrives the vertical feed of the drilling mechanism. The gears 20 and thecone 21 are secured to each other and provided with keyways engaging thefeather 19 in such manner as to permit the free vertical movement of theshaft 13.

Meshing with the gears 20 is a corresponding series of gears 24, whichare loosely mounted upon the shaft 15 and independent of each other.Each of the gears 24 is provided with an aperture 25, entering itsperiphery in a radial direction and communicating with a correspondingaperture 26 in its hub. The shaft 15 is bored to correspond with theapertures in each of the gears 24. A pin 27 is provided for the purposeof keying one of the gears 24. to the shaft 15. The end 28 of the pin 27is rounded or tapered, as shown, and the end 29 is provided with ascrew-threaded socket, to which a tool 30 may be secured for the purposeof inserting the pin 27 into the aperture 26. The pin 27 is furtherprovided with a longitudinal slot 31, which is adapted to engage a pinor shoulder 32, projecting from one side of the aperture 26, and preventsaid pin from turning while the tool 30 is being inserted or removedfrom the threaded socket in said pin. Only one pin 27 is provided, sothat only one of the gears 24 will be secured to the shaft 15 at onetime.

At one side of and parallel with the post 4 is journaled ascrew-threaded shaft 33, which connects by means of bevel-gears to theshaft 34, which receives power from a belt engaging the cone 35. Anannular gear 36 is loosely mounted on the post 4 at a point midway ofthe length of said post, being confined in such position by the collars37. The gear 36 meshes with a gear 38, which is keyed to the shaft 33.

A vertical shaft 39 is journaled at 40 and 41 to each of the crane-arms5 and connects, by means of the bevel-gears 42 and 43, with thehorizontal shaft-18. Each of the shafts 39 carries at its extremity agear 44, meshing with the annular gear 36. The gears 44 are preventedfrom springing away from the gears 36 by means of the collars 45, whichride loosely upon the post 4. Each of the shafts 39 is provided with afeather 46, extending throughout its entire length, suitable bushingsbeing provided in the bearings 40 and 41. A detailed sectional View ofthe bearing 40 will be seen in Fig. 13, from which it will be seen thatthe bevel-gear 42 is loosely mounted within the bearing 40 and upon thebushing 47. The bushing 47 fits the shaft 39 and the feather 46,revolving with the shaft 39, but permitting the longitudinal movement ofsaid shaft. The bushing 47 is secured against longitudinal movement withrespect to the bearing 40 by means of the shoulder 48 and a collar 49. Aclutch member 50 is mounted on the shaft 39, revoluble therewith andadapted to be thrown into or out of engagement with the adjacent face ofthe bevelgear 42. The forked bell-crank lever 51 controls the positionof the clutch member 50.

The screw 52 is journaled horizontally on the crane-arm 5 and engagesthe cross-head 12, so that turning the crank 53 will cause thecross-head 12 to move horizontally along the crane-arm 5. The shaft 18is provided with a feather 54, to which the bevel-gear 17 is splined.The bevel-gear 17 is confined against longitudinal movement with respectto its bearing 55 on the cross-head 12 by means of the sleeve 56.

Each of the crane-arms 5 is provided with a groove 57, in which isseated a segment of a collar 58, which is'provided with hingedclamp-jaws 59, suitably threaded and adapted to fit the threaded shaft33. The jaws 59 are pivoted to the segment 58 by means of the bolt 60.Each of the clamp-jaws 59 is provided with a slotted flange 61, adaptedto receive a bolt 62, which is pivoted at 63 to one of the jaws 59 andwhich is provided with a thumb-nut 64, adapted to engage the other ofthe jaws 59 and draw said jaws together.

An arm 65 is mounted on the post 4 and carries at its extremity thetable 66, above which one of the drilling mechanisms may operate whenthe other drilling mechanism is operating upon a piece of work coveringthe greater part of the bed-plate 1. The arm 65 is revoluble about thepost 4 and provided with a clamp 67 for securing same in any desiredposition. The drill-shaft 13 of the upper set of drilling mechanisms isprovided with a suitable extension 68.

The operation of the device shown is as follows: Power is supplied atthe cones 35 and communicated therefrom by the shafts 34, 33, 39, and 18and the connected gearing to the drilling mechanism. When it is desiredto raise or lower one of the crane-arms 5, the jaws 59 of thecorresponding clamp are clasped around the shaft 33 and tightly drawntogether by means of the thumb-nut 64. The clamps 8 are loosened andpower is applied to the shaft 33. Revolution of the shaft 33 in onedirectionwill raise the crane-arm 5,-

while an opposite rotation will lower it. When the arm has been moved tothe desired position, rotation of the shaft 33 is stopped, and thesleeve 9 may be moved into contact with the bottom of the arm 5 andclamped in such position. It will be seen that the arm 5 may be turnedaround the post 4, while the clamp-jaws 59 are engaging the shaft 33,since the segment 58 is freely movable within the groove 57. After thearm 5 has been brought to its desired position, the clamp-jaws 59 arereleased from the shaft 33, so that said shaft may be freely revolvedwithout affecting the elevation of the cranearm 5. The clamp-jaws 59 areonly in engagement with the shaft 33 when said shaft is being used toraise or lower one of the crane-arms. When it is desired to operate thedrilling mechanism on one of the arms 5, the corresponding clutch 50 isthrown into its engaged position, when power applied at the cone 35 willbe transmitted by means of the shafts 34 33 39, &c., to the drillingmechanism. Since the gears 44 and the shafts 39 are independent of eachother,the mechanism on either crane-arm may be operated entirelyindependently of that on the other. It is assumed that one of the gears24 is keyed to the shaft 15. Four steps are shown on the cone 35, thusadmitting of four difierent speeds of revolution for the shaft 34, andfour sets of gears are shown upon the shafts 13 and 15, admitting offour changes of speed of the drilling mechanism for each difierent speedof the shaft 34, together making sixteen possible changes of speed. Tochange the speed of the shaft 13, the key 27 is removed from the gear 24which corresponds to the previous speed and inserted in the gear 24which corresponds to the desired speed. Relative changes in speed of thedrilling mechanism and its vertical feed are effected by shifting thebelt 22 along the cones 21 and 23. To remove the pin 27 from one of thegears 24, the tool 30 is inserted in the aperture 25 and Ice The table66 is useful when only one of the drills is operating upon a piece ofwork secured to the bed-plate 1, in which case a second piece of workmay be secured to the table 66 and operated upon by the other drill.

It will be seen that the shaft 33 serves both for the purpose of drivingthe drilling mechanism and for the purpose of changing the elevation ofthe crane arm 5. Reversing mechanism for the belt which drives the cone35 is not shown in the drawings and may be of any ordinary form.

It will be seen that numerous details of the construction shown may bealtered without departing from the spirit of my invention. I thereforedo not confine myself to such details, except as hereinafter limited inthe claims.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a d rill-press,the combination of a bedplate; a vertical postrigidly secured to said bed-plate; a pair of arms independentlyjournaled on said post, and independently slidable longitudinally ofsame; drilling mechanism mounted on each of said arms; and means foroperating said drilling mechanisms independently of each other and ofthe relative angular or longitudinal position of said arms.

2. In a drill-press, the combination of a bedplate; a vertical postrigidly secured to said bed-plate; apair of armsindependentlyjournaledon said post and independently slidable longitudinally of same; drillingmechanism mounted on each of said arms; a screw-threaded shaft journaledin said frame in parallel relation to said post; each of said armshaving secured to same a suitable clamp, adapted to be thrown into orout of engagement with the thread on said shaft and adapted when inengagement with said thread, to move said arm longitudinally of saidpost, through the revolution of said shaft; suitable means for securingsaid arms against movement longitudinally of said post; and means foroperating said drillingmechanismsindependently of each other orof therelative angular or longitudinal position of said arms.

3. In a drill-press, the combination of a bedplate; a vertical postrigidly secured to said bed-plate; a pair of arms independentlyjournaled on said post and independently slidable longitudinally ofsame; drilling mechanism mounted on each of said arms; a gear journaledon said post between said arms; a driven shaft journaled on each of saidarms and in parallel relation to said post; a pinion secured to each ofsaid driven shafts and meshing with said gear; suitable mechanismconnecting each of said driven shafts to the drilling mechanism on itsrespective arm; and means for transmitting power to said gear.

4. A drill-press comprising a frame; a vertical post rigidly secured tosaid frame; an arm journaled on said post and slidable longitudinally ofsame; drilling mechanism mounted on said arm; a screw-threaded shaftjournaled in said frame and disposed in. parallel relation with saidpost; means for rotating said shaft; suitable gearing connecting saidshaft with saiddrilling mechanism Whereby said drilling mechanism maybedriven by said shaft regardless of the position of said arm along saidpost; a clutch fordisconnecting said shaft from said drilling mechanism;a suitable clamp secured to said arm and adapted to be thrown into .orout of engagement with the thread on said shaft,and adapted, when inengagement with said thread, to move said arm longitudinally of saidpost, through the revolution of said shaft; and suitable means forsecuring said arm against movement longitudinally of said post.

5. A drill-press comprising a frame; a vertical post rigidly secured tosaid frame; an

arm journaled on said post and slidable longitudinally of same; ascrew-threaded shaft journaled in said frame and disposed in parallelrelation with said post; means for rotating said shaft; a suitable clampsecured to said arm, adapted to be thrown into and out of engagementwith the thread on said shaft, and adapted, when in engagement with saidthread, to move said arm longitudinally of said post, through therevolution of said shaft; suitable means for securing said armlongitudinally of said post; a gearsecured to said threaded shaft; agear journaled on said post and meshing with the gear on said shaft; adriven sh aft, jourualed to said arm on a vertical axis, having mountedthereon and revoluble therewith a pinion meshing with the gear on saidpost, said pinion being secured against movementlongitudinally of saidpost; drilling mechanism mounted on said arm; and suitable gearingconnecting said drilling mechanism with said driven shaft.

6. A drill-press comprising a frame; a vertical post rigidly secured tosaid frame; an arm journaled on said post and slidable longitudinally ofsame; drilling mechanism mounted on said arm; a screw-threaded shaftjournaled in said frame and disposed in parallel relation with saidpost; means for rotating said shaft; suitable gearing connecting saidshaft with said drilling mechanism whereby said drilling mechanism maybe driven by said shaft regardless of the position of said arm alongsaid post; a clutch for disconnecting said shaft from said drillingmechanism; a member slidably mounted on said post and adapted to engagesaid arm; asuitable clamp secured to said member and adapted to bethrown into or out of engagement with the thread on said shaft andadapted, when in engagement with said thread, to move said member andcause same to carry said arm longitudinally of said post; and means forsecuring said arm independently of said member.

7. In adrill-press, the combination ofa bedplate; a vertical postrigidly secured to said bed-plate; a pairof armsindependentlyjournaledon said postand independentlyslidable longitudinally of same; drillingmechanism mounted on each of said arms; a gear journaled on said postbetween said arms; a driven shaft journaled on each of said arms and inparallel relation to said post; a pinion secured toeach of said drivenshafts and meshing with said gear; said pinions being of less Width thansaid gear and being adapted to pass each other while in mesh with saidgear; suitable mechanism connecting each of said driven shafts to thedrilling mechanism on its respective arm; and means for transmittingpower to said gear.

*roases 8. In a drill-press, the combination of a frame; a vertical postsecured to said frame; a screw threaded shaft journaled in said frame inparallel relation to said post; an arm having a hub journaled on saidpost and slidable longitudinally of same, said hub having therein anannular groove extending around said post; aseginent loosely seated insaid groove; a pair of screw-threaded clampjaWs secured to said segment,adapted to be thrown into or out of engagement with said shaft andadapted to move said arm along said post through the revolution of saidshaft.

Signed at Chicago this 28th day of March, 1902.

ADOLPH VLK.

WVitnesses:

EUGENE A. RUMMLER, WM. R. RUMMLER.

